Brocade

Brocade Telephonic, skype & f-2-f Interview

1. Difference between trap and Inform.
2. Enhancements done in SNMP V2 over V1. V3 over V2 and V1.
3. How Security is achieved in SNMP V3.
4. Different types of error messages sent from agent.
5. Given three indices of string type, explain the order of Get-Next command output.
6. How are traps received by a manager.
7. What is the difference between counter and gauge.
8. What are the IPC mechanisms used by SNMP in a process based model
9. What are the ports used by SNMP.
10. Is it possible to do a SNMP V3 GET on  an agent that has been operating since 2 days even though no action was performed on the agent continuously.
11. Use of SNMP Engine ID.

12. few questions about MIB generation, Code generation to be used in the image.
13. What are the default traps available.
14. What are the contents of a trap.
15. What is a proxy agent.
16. Test tools used like Silver Creek, and questions relevant to them.
17. What are the initial messages exchanged between Manager and the Agent in a SNMP V3.
18. How are the counters populated and retrieved by the Agent.
19. Which is better, process based model or thread based model. Which is preferred when.
20. Why is it that only one port is used while tx and Rx in a LAG when the src mac address is the same. How do you address reordering problem in LAG. What if any specific frame is lost. Which layer handles loss of frames.
21. Difference between TCAM and normal CAM. What is advantageous. 
22. What are the contents of trap?

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Brocade First Round Interview

1. What is the difference between switching and routing
2. What is the difference between switch and bridge
3. Explain VLAN classification
4. Explain about priority tagging
5. How VLAN is classified for priority tagged frames
6. An admin is observin that A MAC entry is getting toggled, what is    the problem and what is the solution(loop & STP)
7. How many STP PDUs are sent on a LAG?
8. Why LAG members are always of equal speed? [Other distribution will be
   unequal. And this is ASIC & usage problem. Nothing to do with LACP    protocol]
9. Why we need LAG hashing? What will happen if we don't have hashing?
   And why same session data is transferred always on same LAG member?
10. What is q-in-q. Why we need that?
11. What is VLAN translation and how it helps?
Then He came to "C" and "os" Qs
12. How you reverse a given statement?
13. How you can find duplicates in a given list?
14. How you trace stack fatals  



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Brocade 2nd Round (I can Say Argument)

1. What is q-in-q and why we need q-in-q
2. What all you consider while adding a port to a VLAN
3. What all you consider while adding an ACL to a port
4. What is 802.3ah and why we need that?
5. What is remote loop back, and how we achieve this and what for it is?
Then He came to "C" and "os" Qs
1. How you reverse a given statement? (Same old Q)
2. What is priority inversion?


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Brocade F2F Interview

1. What is STP and why we need that?

2. How we achive MSTP.
3. What is the impact of dynamic VLANs on MSTP?
3. HOW LAG and STP works?
4. Can a port be member of multiple LAGS?
5. What is conflict and how u resolve it? This point went for 30-min discussion.
6. How you can map your work to revenues? (How?)








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Brocade Question Related To Design

1. How good u r at design?
2. Tell me about ur recenet work's design
3. Tell me the design part of malloc and free
4. Tell me why STP and why not STP?
5. Tell me about conflict? (Seems so much of conflicts are around ;))
6. Tell why you need that much salary? (I have many answers ;)
7. Implemented a linked list with sorted insert
8. Write code for ls -t option.
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Brocade Packet Flow Path Question (Last Round)

1. Explain packet flow path in the switch (All stages)
2. Explain packet flow path in the stack
3. Explain packet flow path in the chassis






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